Grenn is a member of the Night's Watch. He was given the nickname Aurochs by Ser Alliser Thorne. He is named to the rangers when he swears his vows.
Appearances
Game of Thrones
Guest cast, played by Mark Stanley
- Episode 1x03: Lord Snow (May 1, 2011)
- Episode 1x04: Cripples, Bastards, and Broken Things (May 8, 2011)
- Episode 1x07: You Win or You Die (May 29, 2011)
- Episode 1x08: The Pointy End (Jun 5, 2011)
- Episode 1x09: Baelor (Jun 12, 2011)
- Episode 1x10: Fire and Blood (Jun 19, 2011)
- Episode 2x01: The North Remembers (Apr 1, 2012)
- Episode 2x02: The Night Lands (Apr 8, 2012)
- Episode 2x05: The Ghost of Harrenhal (Apr 29, 2012)
- Episode 2x08: The Prince of Winterfell (May 20, 2012)
- Episode 2x10: Valar Morghulis (Jun 3, 2012)
- Episode 3x01: Valar Dohaeris (Mar 31, 2013)
- Episode 3x02: Dark Wings, Dark Words (Apr 7, 2013)
- Episode 3x03: Walk of Punishment (Apr 14, 2013)
- Episode 3x04: And Now His Watch is Ended (Apr 21, 2013)
- Episode 4x03: Breaker of Chains (Apr 20, 2014)
- Episode 4x04: Oathkeeper (Apr 27, 2014)
- Episode 4x05: First of His Name (May 4, 2014)
- Episode 4x07: Mockingbird (May 18, 2014)
- Episode 4x08: The Mountain and the Viper (Jun 1, 2014)
- Episode 4x09: The Watchers on the Wall (Jun 8, 2014)
- Episode 4x10: The Children (Jun 15, 2014)